Another option that isn’t quite cash back but is along the same lines of “make money by saving money” — the Honey Chrome extension. Whenever you head to your cart to check out, Honey searches for online coupon codes or better deals from different retailers. That means no more wasted time Googling “[insert store name] coupon code” just to come up empty-handed. Honey does all the legwork for you!

Cool! For now Im doing Craigslist business… I buy cheap stuffs in eBay then sell in Craigslist with profit. It works but it takes time. Im not a sales person who can talk to sell someone about the product. Im a normal quiet guy. But in Craigslist I just wrote down the description of te product Im selling then post them. No need to sales talk someone will just email you if they want to buy that product. But I only meet in public places, with busy area so its safer. I hope this one helps 🙂

Amazon: Many people don’t realize that Amazon is a haven for third party sellers, including regular Joes and Janes cleaning out their attics and garages. If you plan to sell more than 40 items per month on Amazon, consider registering as a professional seller. You’ll need to pay a $39.99 monthly subscription fee, a referral fee that usually ranges from 6% to 20%, and a $1.35-per-item closing fee for media items. You won’t pay the $0.99-per-item selling fee, however. Alternatively, register as an individual seller. The fee schedule is the same as for professionals, except you do have to pay the selling fee and don’t have to pay the subscription fee.

Earny connects with your Google and Amazon accounts to get you money back on purchases if there was a price drop. They will track your email inbox for receipts. If they find a lower price for the item you purchased, they will request a refund on your behalf. Earny takes 25% of whatever the refund price is and credit the rest back to your card. The app understands each individual store's refund policy and how to claim the difference, so it does all the hoop-jumping for you. Earny currently tracks approximately 50 stores, including Amazon, Walmart, Target, and Nordstrom. You can find the full list of eligible retailers here.

Use your home to work from home. If you live in an area where there is a demand for short-term rentals (like near a university or the downtown of a large city), you may well be able to find renters by networking in your community. However, with the rise of Airbnb and places like it the Internet has once again made it much easier to make money from home. Using these sites you can rent out a private room, shared room or even your whole house for a night or month or whatever period of time you like.

Also, make sure you’re up-to-date on CPR, first aid and other emergency procedures. Then make sure your own kids are OK with sharing their home every day. Once all of that is wrapped up, go to your friends and neighbors, your kids’ teachers, your place of worship and anywhere else busy parents are looking for day-care services, and get your word out.
Yoga is getting ever more popular, which means yoga instructors are more in demand than ever—making this another physically rewarding side business idea. Link up with a local yoga studio to teach nightly classes or offer personalized yoga in-home at a higher rate to pursue this kind of emotional and physical balance with others, during your free time while helping your bank balance, too.
Test websites. Remote usability testing means getting paid to navigate a website for the first time and giving feedback to the website owner. Most tests take approximately 15 minutes, and you can get paid up to $10 for each test. A test involves performing a scenario on the client’s website and recording yourself doing it. For example, you might be asked to go through the process of selecting and purchasing an item on a retailer’s website.[1]
Are you an extrovert that loves meeting new people? Selling insurance products—particularly life insurance—may be a great way to bring in some extra cash and build residual income in your spare time. Selling life insurance on the side could quickly generate a consistent $1,000 - $2,000 per month depending on how much time you invest in this side business idea. To get started you’ll likely want to take an online course to brush up on the subject matter, and then pass a state licensing exam. The biggest challenge you'll face as a new agent is generating sales beyond just helping out friends and family. From there, it’s all about networking and lead generation to grow this one. Learn more about this side business idea with this getting started in life insurance guide from the team over at NoExam.
Ebooks can be a hard path to online success too, from my personal experience but as you rightly said, it can be a great gateway vehicle to drive traffic to other monetized sites. Having said that though, getting your ebook on Amazon, Barnes & Noble, Lulu, Smaswords etc., is a great way to get noticed and make money overtime. An arresting e-book cover is a MUST! And if you are a DIY freak like me, you could do your own e-book cover for $0. I also use a graphic design software similar to Philip’s.
Survey Junkie is among the most straightforward survey sites out there, which puts them at the top of this list. All you have to do is sign up to be eligible for surveys. Once you complete a survey you earn a certain amount of points that you can exchange for cash paid directly to a PayPal account or you can redeem your points for gift cards. Super simple.
You will need to learn how to work with all kinds of carpet fabrics, from synthetic to wool carpets. Decide whether you will take on valuable antique carpets and family heirlooms; if so, you will want to get specialized training in how to handle these carpets and the specialized ways of cleaning them. Learn how to get tough stains and odors out of carpets--such as dog and cat odors--and your services will be in great demand.

We're all guilty of spending too much time on Facebook, Twitter, or Pinterest sometimes, so why not get paid to put your expertise to work as a side business idea? Lots of companies, especially startups or those in retail and travel—even influencers have heavy social media presences and are constantly in need of people to help build their brands online. You can find these types of opportunities on sites like Flexjobs and CareerBuilder and most employers on these websites are conditioned to working with people who operate these services as their side business idea. Over time as you grow in your ability to leverage various social channels, you can add more service offerings like running high-return Facebook Ad campaigns or hosting lucrative sweepstakes competitions for the brands you want to work with.

You could also opt to use existing websites for making money. These include both active income and passive income methods. For example, you could sell some used items or invest in creating some digital designs that then can be sold on merchandise. Again, devote a sizable portion of your time to passive income so that you can slowly build up earnings that will arrive on autopilot without any extra added effort.